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REACTIONS OF LIGNIN MODEL COMPOUNDS WITH PULP BLEACHING CHEMICALS - REACTIONS OF 4-METHYLTRICHLOROCATECHOL

TitleREACTIONS OF LIGNIN MODEL COMPOUNDS WITH PULP BLEACHING CHEMICALS - REACTIONS OF 4-METHYLTRICHLOROCATECHOL
Publication TypeJournal Article
Year of Publication1992
AuthorsMcKague, AB, Reeve, DW, Rettig, SJ, Trotter, J
JournalCanadian Journal of Chemistry-Revue Canadienne De Chimie
Volume70
Pagination1711-1716
Date PublishedJun
Type of ArticleArticle
ISBN Number0008-4042
KeywordsCHLORINATION
Abstract

{Aqueous chlorination of 4-methyltrichlorocatechol 2 gave the tetrachlorohydroxycyclohexenone 4, which crystallized as the hydrate 5. Reaction of 4 with aqueous sodium hydroxide resulted in a benzilic acid rearrangement to the tetrachlorodihydroxycyclopentenecarboxylic acid 6. These reactions have important implications with respect to understanding how lignin is removed during pulp bleaching. Crystals of the tetrachlorotrihydroxycyclohexenone 5 are monoclinic

URL<Go to ISI>://A1992JR09700022